Small script to backup wordpress uploads. It creates a full tar in monday and incremental tars until the end of week.

backup-uploads.sh

#!/bin/bash
set -e

BACKUP_FOLDER='/srv/backups/uploads'
SOURCE_FOLDER='/var/www/awesomesite/wp-content/uploads'
PREFIX_NAME='awesomesite'
# -----------------------------------------------------


woy=`date +%W` # muda toda segunda-feira
dow=`date +%w` # valor é 1 na segunda-feira

count=`find $BACKUP_FOLDER -maxdepth 1 -name "${PREFIX_NAME}.${woy}.*.tar" | wc -l`

control_name="${PREFIX_NAME}.${woy}.txt"
backup_name="${PREFIX_NAME}.${woy}.${count}.tar"

control_path="${BACKUP_FOLDER%%/}/$control_name"
backup_path="${BACKUP_FOLDER%%/}/$backup_name"

if [ -f "$backup_path" ];
then
    echo "Erro: '${backup_path}' já existe"
    exit 1;
fi

tar -cf $backup_path --listed-incremental=$control_path $SOURCE_FOLDER

if [ "$dow" = "1" ];
then
    lwoy=$(( $woy-1 ))

    control_name="${PREFIX_NAME}.${lwoy}.txt"
    control_path="${BACKUP_FOLDER%%/}/$control_name"
    rm -f $control_path

    find $BACKUP_FOLDER -maxdepth 1 -name "${PREFIX_NAME}.${lwoy}.*.tar" -delete
fi